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The Rex Organization filed suit in New Orleans federal court on Thursday. It claims King REX Spirits is using the krewe's image to market its products.

Specifically, the suit alleges that King REX produces and sells spirits "replete with symbols and descriptions of the customs, traditions, trademarks, images and historical references of the Rex Organization."

The Rex Organization -- also known as the School of Design -- is the oldest parading krewe in New Orleans, dating to 1872. King REX Spirits is a California-based company, though its themes defy that geographic identity.

The Rex Organization is seeking damages and injunctive relief from the court.

The group acknowledges that other registered trademarks include the name "Rex," but contends King REX Spirits is violating trademark protections because of the close association with Carnival conveyed through its products and marketing campaign.

WDSU contacted King REX Spirits on Friday morning seeking a response to the lawsuit.